'He administered and oversaw the telecommunications and information technology systems for the company.'

'If the relevant agency has lawful authority to intercept a telecommunication, technological barriers should not prevent them from doing so.'

'One embodiment of the invention may be viewed as a telecommunications service for allowing a user to send a telecommunication comprising textual, graphic and/or audio material to be delivered to a recipient in e-mail form.'

More definitions

1. Sometimes, telecommunication. (used with a singular verb) the transmission of information, as words, sounds, or images, usually over great distances, in the form of electromagnetic signals, as by telegraph, telephone, radio, or television.

2. Sometimes, telecommunication. (used with a singular verb) the science and technology of such communication.